poll after poll shows momentum building behind the romney/ryan tukt and there's pressure on the president now to wrap up his game for the three-week sprint to election day. let's bring in our correspondent, we're getting reaction to the vice presidential debate, more comments coming in. but the president has his mission cut out for him right now. dan? >> he really does. we just have to look back to right after the debate where the president turned up his volume, strongly aggressively going after his gop opponents. but what we saw this week at the university of miami on thursday at a big rally there was the president even turning up the volume a bit more. attacking mitt romney for what the president says was his changing position on a whole host of issues, including taxes. take a listen. >> he's trying to go through an extreme makeover. after running for more than a year in which he called himself severely conservative, mitt romney is trying to convince you that he was severely kidding. >> i was talking to a senior campaign official about the tone of the president's rally and this official